What is the equation presented in Charles's Law?

The equation stated in Charles's Law, which describes the relationship between the volume and temperature of a gas at constant pressure, is expressed as V1 / T1 = V2 / T2. This relationship shows that the volume of a gas is directly proportional to its temperature (in Kelvin) when pressure is held constant.

In the equation, V1 and T1 represent the initial volume and absolute temperature of the gas, while V2 and T2 indicate the final volume and absolute temperature after a change occurs. This means if the temperature of the gas increases, its volume also increases, provided the pressure remains constant. The understanding of this law is essential in various medical and paramedic settings, particularly when dealing with gases and how they behave under different temperatures, which can be crucial in managing respiratory issues or in the use of oxygen tanks in flight situations.

Therefore, the statement that presents the correct application of Charles's Law is that the ratio of volume to temperature is constant, which directly leads to the equation V1 / T1 = V2 / T2.